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Recognised as Colour

#51666D

  • #51666D
  • Cyan
  • Dark
  • Nearest: Dim grey

#51666D is a cyan with RGB values 81, 102, 109 and HSL 195°, 15%, 37%. It is a dark colour, so white text on it reaches 6:1 contrast (AA for normal text). The nearest named colour is Dim grey.

Colour values

#51666D#51666D
HEX#51666D
RGBrgb(81, 102, 109)
RGB (0–1)0.3176, 0.4, 0.4275
RGB percentages31.8%, 40%, 42.7%
HSLhsl(195, 14.7%, 37.3%)
HSV / HSBhsv(195, 25.7%, 42.7%)
CMYK25.7%, 6.4%, 0%, 57.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,334,637
CSS custom property--colour: #51666D;

Brightness & contrast

Relative luminance0.12356WCAG 2.x, 0 is black and 1 is white
Perceived brightness97.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.05:1
Contrast with white6.05:1WCAG normal text: AA
Contrast with black3.47:1WCAG normal text: Fail
Greyscale equivalent#626262
Inverted#AE9992

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#62656Dno red cones; affects about 1% of men; ΔE 6.9 from the original
Deuteranopia#5D616Dno green cones; the most common form, about 1% of men; ΔE 7.3 from the original
Tritanopia#496868no blue cones; rare, and affects men and women equally; ΔE 5.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text6.05:1WCAG large text: AAA
Contrast with black, large text3.47:1WCAG large text: AA

Named colours

Dim grey · ΔE 9.3Dark slate grey · ΔE 12.3Slate grey · ΔE 12.4Gray · ΔE 14.8Light slate grey · ΔE 15.4Cadetblue · ΔE 23.7
Nearest named CSS colourDim grey (#696969)ΔE 9.3, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#6D5851
Analogous#516D66, #51586D
Triadic#6D5166, #666D51
Split complementary#6D5158, #6D6651
Tetradic#66516D, #6D5851, #586D51

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#BCC9CE
Lighter +30%#9FB2B8
Lighter +20%#829AA2
Lighter +10%#67818A
Darker −10%#3B4B50
Darker −20%#262F32
Darker −30%#101415
Darker −40%#000000
More saturated +25%#397285
Less saturated −25%#5F5F5F

Channel breakdown

R81
G102
B109
Red81 (31.8%)
Green102 (40%)
Blue109 (42.7%)
Hue195°
Saturation (HSL)14.74%
Lightness37.25%
Dominant channelBlue
Hex per channelR 51 · G 66 · B 6D

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Every value on this page was computed from “51666d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.